function validateSearch(which)
{
		var msg=which.txtSearch.value;
		if(msg=="")
		{
			alert("Search cannot be blank");
			which.txtSearch.focus();
			return false;
		}
		else
		{
			var flag=0;
			for(i=0;i<msg.length;i++)
			{
				if(msg.charCodeAt(i)==32)
				{
					flag++;
				}
			}	
			if(flag==msg.length)
			{
				alert("Search cannot be blank");
				which.txtSearch.focus();
				return false;
			}
		}
		return true;
}